Data Subject Request (DSR) Reference Number Regex for Go

What this pattern does

This page provides a well-structured, multi-part regular expression for matching data subject request (dsr) reference number, ported and verified for Go. Identity and credential patterns need both correctness and safety, since they're frequent targets for adversarial input. The snippet below is ready to drop into your Go project — whether you're validating in a Gin handler, a gRPC service, or a command-line tool.

Go Implementation

// Data Subject Request (DSR) Reference Number
// ReDoS-safe | RegexVault — Identity & PII > Consent & Compliance

package validation

import "regexp"

var dataSubjectRequestDsrReferenceNumberRe = regexp.MustCompile(`^(?:DSR|DSAR|SAR|RTF|RTE|REC)[\-][0-9]{4}[\-][0-9]{4,8}$`)

func ValidateDataSubjectRequestDsrReferenceNumber(s string) bool {
    return dataSubjectRequestDsrReferenceNumberRe.MatchString(s)
}

// Example
// fmt.Println(ValidateDataSubjectRequestDsrReferenceNumber("DSR-2024-00001234")) // true

Test Cases

When to use this pattern

This pattern is drawn from the Identity & PII > Consent & Compliance category and carries a ReDoS-safe certification. That matters for Go developers because Go's RE2 engine is inherently safe from catastrophic backtracking, but this pattern has been additionally verified for correctness. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

DSR reference formats: DSR=Data Subject Request, DSAR=Data Subject Access Request, SAR=Subject Access Request (UK), RTF=Right to Forget, RTE=Right to Erasure, REC=Rectification. Year prefix allows filtering by year. Sequential number ensures uniqueness.